Hamilton is under a severe thunderstorm watch

Environment Canada issued a series of severe thunderstorm warning and watches on Monday for the City of Toronto, Vaughan, Richmond Hill, Markham, Newmarket, Georgina, Hamilton, and the regions of Halton and Peel.

"Remember, severe thunderstorms can produce tornadoes".

Residents are reminded to stay indoors when there is a severe thunderstorm in the area.

"Fast-moving water across a road can sweep a vehicle away". Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles.

Their injuries were found to be minor, but six to ten Canadians per year are killed by lightning.

The heat warning, meanwhile, remains in effect, however, a cold front will move through northeastern Ontario later today.

In addition to the severe thunderstorm watch, Chatham-Kent and Windsor-Essex are still under a heat warning. A cooler and less humid air mass will arrive in its wake by this evening, heralding an end to this heat event.

Extremely hot conditions put people at risk of heat stroke and people should be vigilant in monitoring their friends and family for symptoms which include high body temperature, lack of sweat, confusion, fainting and unconsciousness.